Power Fist 8344525 User manual

User Manual
Please read and understand all instructions before use.
Retain this manual for future reference.
8344525V 2.6
3/8 in. Reversible
Composite
Air Drill

3
Visit www.princessauto.com for more information
8344525
3/8 in. Reversible
Composite
Air Drill
V 2.6
SPECIFICATIONS
Chuck Type Keyless
Chuck Size 3/8 in.
Air Consumption @ 90 PSI 4 CFM
Max. Torque 88 ft-lb
No Load Speed (2 stage trigger) 1,800/1,000 RPM
Variable Speed No
Spindle Thread 3/8 in. x 24 UNF
Exhaust Style Rear
Housing Material Composite
Side Handle No
Max. Pressure 90 PSI
Min. Hose Size Required 3/8 in. I.D.
Air Inlet 1/4 in. NPT
FUNCTIONS
The 3/8 in. Reversible Composite Air Drill is used for maintenance, light assembly or automotive repairs
that require tough drilling, honing, reaming and hole sawing. This drill is equipped with a durable motor
and gears, an ergonomic cushion grip, and a precise throttle control.

3/8 in. Reversible Composite Air Drill
4For technical questions call: 1-800-665-8685
8344525V 2.6
SAFETY
IMPORTANT SAFETY PRECAUTIONS
WARNING! Read and understand all instructions before using this tool. The operator must follow basic
precautions to reduce the risk of personal injury and/or damage to the equipment. Before allowing
someone else to use this tool, make sure they are aware of all safety information.
NOTE: Keep this manual for safety warnings, precautions, operating, inspection and
maintenance instructions.
WORK AREA
1. Operate in a safe work environment. Keep your work area clean and well lit.
2. Keep anyone not wearing the appropriate safety equipment away from the work area.
3. Minimize distractions in the work environment. Distractions can cause you to lose control
of the tool.
4. Store tools properly in a safe and dry location to prevent rust or damage.
5. Always lock up tools and keep them out of the reach of children.

3/8 in. Reversible Composite Air Drill
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8344525 V 2.6
PERSONAL SAFETY
CAUTION! Wear protective equipment approved by the Canadian Standards Association (CSA) or
American National Standards Institute (ANSI) when using the tool.
1. Head Protection
a. Always wear impact safety goggles that provide front and side protection for the eyes.
b. Wear the appropriate rated dust mask or respirator.
c. Wear earplugs if the power tool or work environment is noisy.
d. Wear a full-face shield if your work creates metal filings or wood chips.
e. Wear a hard hat to protect your head from falling objects.
2. Gloves
a. The gloves should provide protection based on the work materials.
b. Wear suitable gloves to reduce the effects of vibration.
3. Protective Clothing
a. Wear protective clothing designed for the work environment and tool. Examples are
electrical non-conductive clothes or clothes treated to resist corrosive liquids or materials.
4. Foot Protection
a. Steel toe footwear or steel toe caps to prevent injury from falling objects.
b. Non-skid footwear is recommended to maintain footing and balance.
5. Control the tool, personal movement and the work environment to avoid personal injury or
damage to tool. Stay alert, watch what you are doing and use your common sense.
a. Keep articles of clothing, jewelry, hair, etc., away from moving parts to avoid entanglement
with a tool.
b. Do not operate any machine/tool when tired or under the influence of drugs,
alcohol or medications.
c. Do not overreach when operating a tool. Proper footing and balance enables better control
of a tool in unexpected situations.
d. Use clamps or other practical ways to support or secure the workpiece to a stable
platform. Holding the workpiece by hand or against your body is not stable and may lead
to loss of control and injury.

3/8 in. Reversible Composite Air Drill
6For technical questions call: 1-800-665-8685
8344525V 2.6
AIR TOOL PRECAUTIONS
1. Air tools produce more noise than their electric counterparts. Extended exposure to this noise
may cause hearing loss.
a. Wear ear protection gear to eliminate or reduce the noise.
b. If possible add a muffling device to the air tool’s exhaust.
2. Do not operate this tool if the air hose is damaged.
a. Inspect the tool’s air line for cracks, fraying or other faults before each use.
b. Discontinue use if a hissing can be heard from the air line or connectors while
operating the tool.
c. Take the following steps if either of the above situations occur:
i. Tag or mark the tool as ‘defective’ or ‘out of service’ until repaired.
ii. Contact a qualified person repair or replace the defective component/hose.
3. Prevent damage to air hose by observing the following:
a. Never use the hose to carry the tool.
b. Keep the air hose of the tool and the tool’s work path while in operation. The hose should
always stay behind the tool.
c. Keep the hose away from heat, oil, sharp edges or moving parts.
d. Do not allow people, mobile equipment or vehicles to pass over unprotected air hose.
i. Position air hose away from traffic areas.
ii. Place hose in reinforced conduit.
iii. Place planks on either side of the hose to create a protective trench.
e. Do not wrap hose around the tool as sharp edges may pierce the hose or cause cracks if
wound too tight. Gently coil the hose and either hang on a hook or fasten with a device to
keep hose together when storing.
4. An air hose under pressure that is damaged or disconnected from an air tool may whip around
and cause damage to the work area or personal injury. Secure the compressor’s air hose to a
fixed or permanent structure with clamps or cable ties.

3/8 in. Reversible Composite Air Drill
7
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8344525 V 2.6
AIR POWER TOOL PRECAUTIONS
WARNING! Immediately switch off the tool if any of the following occurs:
• Malfunction of the air inlet, air compressor or damage to the air supply hose.
• The switch or trigger is broken.
• The drill bit moves in an unsafe way.
1. Ensure air source matches the pressure rating of the tool’s motor (see Specifications).
2. Make sure the power switch is in the OFF position before connecting the tool to the air source.
3. Do not place the tool down until the drill bit has stopped moving. The drill bit may catch the
surface of work material and wrench itself free, causing injury to the user or others in the
work area.
4. Never use a tool with a cracked or worn drill bit. Change the drill bit before using.
5. Do not start the tool when the drill bit is touching the work piece.
6. Always use both hands when operating the tool, unless the tool is designed for single hand use.
7. Hold tool by insulated gripping surfaces when performing an operation where it may contact
hidden wiring or its own cord. Contact with a "live" wire will electrify exposed metal parts and
shock the operator.
8. Before using the tool on a work piece, test the tool by running it at the highest no-load speed
for at least 30 seconds in a safe position. Stop immediately if there is any abnormal vibration or
wobbling that could indicate poor installation of the drill bit. Check the tool to determine
the cause.
9. Take work breaks to prevent the tool’s motor from overloading and/or overheating.
10. When the tool is in operation, keep hands away from the drill bit and the area it is
being applied to.
11. Do not use the tool on any material containing asbestos.
12. Do not touch the drill bit or the surface that has been cut with this tool immediately after use.
The surface will be hot and may cause an injury.
13. Do not allow persons who are not familiar with the tool or have not read these instructions to
use the tool.

3/8 in. Reversible Composite Air Drill
8For technical questions call: 1-800-665-8685
8344525V 2.6
VIBRATION PRECAUTIONS
1. This tool vibrates during use. Repeated or long-term exposure to vibration may cause
temporary or permanent physical injury, particularly to the hands, arms and shoulders.
2. Anyone using vibrating tools regularly or for an extended period should first be examined by
a doctor and then have regular medical check ups to ensure medical problems are not being
caused by or worsened from tool use.
3. If you feel any medical symptoms related to vibrations (such as tingling, numbness, and white
or blue fingers), seek medical attention as soon as possible.
4. DO NOT use this tool if one of the following applies:
a. Pregnant
b. Impaired blood circulation to the hands
c. Past hand injuries
d. Nervous system disorders
e. Diabetes
f. Raynaud’s Disease
5. Do not smoke while operating the tool. Nicotine reduces the blood flow to the hands and
fingers, increasing the risk of vibration-related injury.
6. Wear suitable gloves to reduce the effects of vibration.
7. Use the tool with the least amount of vibration, when there is a choice between
different processes.
8. Do not use for extended periods. Take frequent breaks to when using this tool.
9. Let the tool do the work. Grip the tool as lightly as possible (while still keeping safe
control of it).
10. To reduce vibrations, maintain the tool as explained in this manual. If abnormal vibrations
occur, stop using this tool immediately.

3/8 in. Reversible Composite Air Drill
9
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8344525 V 2.6
SPECIFIC SAFETY PRECAUTIONS
1. When drilling deep holes, periodically remove the drill bit from the workpiece to allow debris to
clear out from the bit.
2. Do not exceed air pressure of 90 PSI when using this tool.
WARNING! Exceeding the maximum pressure rating of 90 PSI will drastically reduce the life
of the tool and potentially cause serious injury to the operator.
3. Do not use quick disconnect couplings when installing this tool. See the section titled
Installation for correct setup.
4. Always shut off air supply, drain hose of air pressure, and disconnect the tool from the air
supply when not in use, or making any adjustments or repairs.
TOOL USE AND CARE
1. Use the correct tool for the job. Do not force a tool or attachment to do the work of a larger
industrial tool. Maximize tool performance and safety by using the tool for its intended task.
2. This tool was designed for a specific function. Do not modify or alter this tool or use it for an
unintended purpose.
3. Securely hold this tool using both hands, unless it is designed for single hand use. Using a tool
with only one hand can result in loss of control.
4. Maintain tools with care (see Maintenance).
5. Remove adjusting keys and wrenches from the tool before operation or connecting it to a power
source. A wrench or key that is left attached to a rotating part of the tool increases the risk of
personal injury.
6. Avoid unintentional starts. Be sure that the throttle/ignition switch is in the neutral or OFF
position when not in use and before connecting it to any air source.
7. Do not carry the tool with fingers near or on the trigger/switch.

3/8 in. Reversible Composite Air Drill
10 For technical questions call: 1-800-665-8685
8344525V 2.6
AIR COMPRESSOR
Ensure the compressor used with the tool can supply the required Cubic Feet per Minute at the required
PSI (see Specifications).
1. Use proper size and type of air pressure line
and fittings.
2. Use only clean, dry, regulated compressed air at the
rated range as marked on the tool.
CAUTION! Do not use an air source besides an air
compressor to power this tool.
3. Always use an air regulator, an in-line filter and
a moisture trap in your compressed air system.
These accessories will increase the tool’s life and
keeps the tool in good working condition. See the
diagram for recommended components of an
air line.
4. Avoid using an air hose that is too long. The longer
the hose, the lower the pressure that reaches the tool, possibly causing it to cease functioning.
As well, a longer hose can become a tripping hazard.
5. Air tool CFM consumption ratings are based upon a 25% duty cycle. If you require continuous
duty, a larger compressor is required.
AIR SOURCE INSTALLATION
WARNING! Never use pure oxygen, carbon dioxide, combustible gases or any bottled gas as an air
source for a tool. Such gases are capable of causing an explosion and serious injury to persons.
1. Set the air pressure regulator on the air compressor to the recommended PSI level (see
Specifications). Do not exceed the tool recommended air pressure. Excess pressure could
result in damage to the tool, to your workpiece or serious injury.
2. Prepare a standard 1/4 in. air connector for use with your tool. Wrap the threaded portion of
the air connector with thread seal tape. Wrap in a clockwise direction so it will not unravel when
attaching to a quick connector. Attach it to the tool air inlet and tighten.
3. Attach a standard quick connector to the air source’s hose. Attach the air hose to the
tool’s air connector.
4. Check the air line and its connections for air leaks. Do not use the tool until you have repaired
all air leaks.

3/8 in. Reversible Composite Air Drill
11
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8344525 V 2.6
DISCONNECTING AIR SOURCE
WARNING! Failure to follow these steps could result in severe injury, tool or property damage.
Disconnect tool from air source before cleaning, servicing, changing parts/accessories or when
not in use.
1. Turn the air regulator to the OFF or L position.
2. Turn off the air compressor.
3. Disconnect the air pressure hose.
4. Discharge any residual pressure inside the tool.

3/8 in. Reversible Composite Air Drill
12 For technical questions call: 1-800-665-8685
8344525V 2.6
AIR TOOL LUBRICATION
CAUTION! NEVER use a penetrating oil to lubricate the tool. Penetrating oil may act as a solvent that
will break down the grease and cause the tool to seize up.
1. All air tools are packed in grease to prevent corrosion of internal parts during shipping and
storage. We recommend you clean this out to have optimum performance from your new air
tool. Add a generous amount of air tool oil in the air inlet, and then run the tool under no load
until exhaust is clear to remove packing grease.
2. It is very important that the tool is lubricated. Without lubrication, the tool will not work
properly and parts will wear prematurely. Manually adding a drop or two of air tool oil into the
tool’s male connector once a day is better than using an automatic in-line lubricator. In-line
lubricators should only be required when there are multiple users of the same tool.
3. Air tool oil is the only recommended lubricant for use in all air tools. Do not use other types of
lubricants to oil your tools. Using the wrong lubricant will cause premature tool failure and/or
loss of power. Substitutes may harm the rubber compounds in the tool’s O-rings and
other seals.
4. Keep the airline lubricator filled and correctly adjusted. The in-line lubricator should be regularly
checked and filled with air tool oil. Proper adjustment of the in-line lubricator is performed by
placing a sheet of paper next to the exhaust ports and holding the throttle open approximately
30 seconds. The lubricator is properly set when a light stain of oil collects on the paper.
Excessive amounts of oil should be avoided.
5. Avoid adding too much air tool oil during normal use. Too much oil can cause premature power
loss and eventual tool failure. The tool will need to be taken apart by a qualified technician and
cleaned of excess oil.
6. In the event that it becomes necessary to store the tool for an extended period of time
(overnight, weekend, etc.), it should receive a generous amount of lubrication at that time.
The tool should be run for approximately 30 seconds to ensure oil has been evenly distributed
throughout the tool. The tool should be stored in a clean and dry environment.

3/8 in. Reversible Composite Air Drill
13
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8344525 V 2.6
UNPACKING
1. Carefully remove the parts and accessories from the box. Retain packaging material until you
have carefully inspected and satisfactorily installed or operated the tool.
2. Make sure that all items in the parts list are included.
3. Inspect the parts carefully to make sure the tools and accessories were not damaged
while shipping.
WARNING! Do not operate the tool if any part is missing. Replace the missing part before operating.
Failure to do so could result in a malfunction and serious personal injury.
PARTS IDENTIFICATION
Contents:
• 3/8 in. Reversible Composite Air Drill
INSTALLATION
CAUTION! Always use clean, dry air. Excessive moisture and dirt will greatly reduce the life of
the air motor.
It is recommended that an in-line filter-regulator-lubricator be installed as close to the tool as possible.
See diagram below for recommended connections and hose sizes.
OPERATION
1. Once the air source has been properly installed, squeeze the trigger to operate the drill.
2. To spin the drill bit forward, place the Reverse Lever (no. 9) to the setting labelled ‘F.’
3. To reverse the drill bit, place the Reverse Lever (no. 9) to the setting labelled ‘R.’

3/8 in. Reversible Composite Air Drill
14 For technical questions call: 1-800-665-8685
8344525V 2.6
MAINTENANCE
1. Maintain the tool with care. A tool in good condition is efficient, easier to control and will
prevent unnecessary problems.
2. Keep the tool handles clean, dry and free from oil/grease at all times.
3. Follow instructions for lubricating and changing accessories.
4. Inspect the tool fittings periodically. Have damaged or worn components repaired or replaced
by an authorized technician.
5. Inspect the tool fittings, alignment and hoses and power supply cord and components
periodically. Have damaged or worn components repaired or replaced by an
authorized technician.
6. Sharp tools are safer than dull tools. Applying excessive force while using a dull tool can lead to
slips and cause damage to your workpiece or personal injury.
7. Maintain the tool’s label and name plate. These carry important information. If unreadable or
missing, contact Princess Auto Ltd. for replacements.
CAUTION! Only qualified service personnel should repair the tool.
LUBRICATION
Only use the lubricants supplied with the tool or specified by the manufacturer. Other lubricants may not
be suitable and may damage the tool or cause a malfunction during use.
Use an air line lubricator with air tool oil, available at your local Princess Auto Ltd, adjusted to two (2)
drops per minute. If an air line lubricator cannot be used, add air motor oil to the inlet once a day.
CAUTION! NEVER use a penetrating oil to lubricate the tool. Penetrating oil may act as a solvent that
will break down the grease and cause the tool to seize up.
STORAGE
When not in use for an extended period, apply a thin coat of lubricant to the steel parts to avoid rust.
Remove the lubricant before using the tool again.
DISPOSING OF TOOL
If your tool has become damaged beyond repair, do not throw it out. Bring it to the appropriate
recycling facility.

3/8 in. Reversible Composite Air Drill
15
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8344525 V 2.6
TROUBLE SHOOTING
If the tool does not function properly or if it is missing parts, contact Princess Auto Ltd. for a solution. If
unable to do so, have a qualified technician service the tool.
Problem(s) Possible cause(s) Suggested solution(s)
The tool runs at normal speed
but loses speed under load.
Motor parts are worn. Contact your local Princess Auto Ltd.
or have a qualified technician replace
the worn parts.
The tool runs slowly. Air is
slightly flowing from exhaust.
The motor parts are jammed
with dirt particles. 1.Check the air inlet filter
for blockage.
2.Lubricate the tool as
per instructions.
3. Operate the tool in short bursts
while reversing the tool’s rotation
back and forth.
4. Repeat as necessary, contact your
local Princess Auto Ltd if the above
steps fail.
The power regulator is in
closed position.
The air flow is
blocked by dirt.
Loss of power or
erratic performance.
Excessive drain on
the air line.
Check the air supply. If the tool is not
connected to a 1/4 in connector and a
hose with 3/8 in. I.D., connect
it properly.
Moisture or restriction in
the air pipe.
Incorrect size or type of
hose connectors.

PARTS LIST
No. DESCRIPTION QTY.
1. Air Inlet 1
2. Exhaust Sleeve 1
3. 2.5 x 24 Pin 1
4. Housing 1
5. Spring 1
6. O-ring 1
7. Valve Stem 1
8. O-ring 1
9. Reverse Lever 1
10. Trigger 1
11. O-ring 1
12. Bearing 696ZZ 1
13. Rear Plate 1
14. 2.5 x 6 Pin 2
No. DESCRIPTION QTY.
15. Cylinder 1
16. Rotor 1
17. Rotor Blade 5
18. Packing 1
19. Front Plate 1
20. Bearing 608ZZ 1
21. Washer 1
22. Gear Link 1
23. Gear 2
24. Pin 2
25. Bearing 6001Z 1
26. Gear Plate 1
27. Bearing
6002ZZ
1
PARTS BREAKDOWN
No. DESCRIPTION QTY.
28. Clamp Nut 1
29. Washer 1
30. 3/8 in. Keyless
Chuck
1
31. Chuck Screw 1
32. Bushing 1
33. O-ring 1
34. Muffler 1
35. Needle Bearing 2
36. Valve Stem 1
37. Valve Stem
Bushing
1

8344525
Manuel d'utilisateur
Vous devez lire et comprendre toutes les instructions avant d'utiliser l'appareil.
Conservez ce manuel afin de pouvoir le consulter plus tard.
V 2,6
Perceuse pneumatique
réversible en
composite de 3/8 po
No. DESCRIPTION QTY.
28. Clamp Nut 1
29. Washer 1
30. 3/8 in. Keyless
Chuck
1
31. Chuck Screw 1
32. Bushing 1
33. O-ring 1
34. Muffler 1
35. Needle Bearing 2
36. Valve Stem 1
37. Valve Stem
Bushing
1

3En cas de questions techniques, appelez le 1-800-665-8685
8344525V 2,6
Perceuse pneumatique
réversible en
composite de 3/8 po
SPÉCIFICATIONS
Type de mandrin Sans clé
Taille du mandrin 3/8 po
Consommation d’air à 90 lb/po carré 4 pi cubes/min
Couple max. 88 lb·pi
Vitesse à vide (gâchette biphasée) 1 800/1 000 tr/min
Vitesse variable Non
Filetage de broche 3/8 po x 24 UNF
Type d’échappement Arrière
Matériau du boîtier Composite
Poignée latérale Non
Pression max. 90 lb/po carré
Diamètre de tuyau min. requis 3/8 po D.I.
Entrée d’air 1/4 po NPT
FONCTIONS
La perceuse pneumatique réversible en composite de 3/8 po s’utilise pour l’entretien, les activités
d’assemblage léger ou les réparations d’automobile demandant des opérations robustes de perçage,
de pierrage, d’alésage et de sciage au moyen d’une scie-cloche. La perceuse est munie d’un moteur et
d’engrenages durables, d’une prise coussinée ergonomique et d’une commande d’accélération précise.

Perceuse pneumatique réversible en composite de 3/8 po
4En cas de questions techniques, appelez le 1-800-665-8685
8344525
V 2,6
SÉCURITÉ
CONSIGNES DE SÉCURITÉ IMPORTANTES
AVERTISSEMENT ! Lisez et assurez-vous de comprendre toutes les instructions avant d’utiliser cet
outil. L’utilisateur doit respecter les précautions de base afin de réduire le risque de blessure et/ou de
dommage à l’équipement. Avant de permettre à une autre personne d’utiliser cet outil, assurez-vous
qu’elle est au courant de toutes les consignes de sécurité.
REMARQUE : Conservez ce manuel qui contient les avertissements de sécurité, les précautions, les
instructions de fonctionnement, d’inspection et d’entretien.
AIRE DE TRAVAIL
1. Travaillez dans un environnement de travail sécuritaire. Gardez votre aire de travail propre et
bien éclairée.
2. Assurez-vous que les personnes qui ne portent pas l’équipement de sécurité approprié ne se
trouvent pas à proximité de l’aire de travail.
3. Minimisez les distractions au sein de l’environnement de travail. Les distractions peuvent
causer une perte de contrôle de l’outil.
4. Rangez les outils correctement dans un lieu sécurisé et sec pour empêcher la rouille
ou les dommages.
5. Gardez toujours les outils dans un endroit verrouillé et hors de la portée des enfants.